in the investigation. we have learned that tamerlan, the brother who now is dead in the attacks, actually called his per during the shootout that went on with police in watertown on thursday. before the shootout when he and his brother hijacked a car in watertown, the suspect, if we can get to the video, actually left his cell phone in the car and that is how watertown police were able to track down the suspects. the surviving bombing suspect, dzhokhar tsarnaev, is awake if the hospital and responding on-and-off to questions in writing because of severe wounds to his neck and threat. it is unclear if he self inicted those wndou or they te of the shoot u.n. investigators are asking him about other cell members and other unexploded bombs and his motive. take a listen. >> first of all, you need the right facts in order to be able to charge, that the federal government is still determining what was the motive of the two young men, are they connected to anyone else? that question is could be premature without the basis for it. >> the city is working on a plan to re-open the six blocks around the bombing.